ନିଓବିଅମ

ଉଇକିପିଡ଼ିଆ ରୁ
ସିଧାସଳଖ ଯିବେ ଦିଗବାରେଣିକୁ, ଖୋଜିବେ
Niobium,  41Nb
A lump of gray shining crystals with hexagonal facetting
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ niobium, Nb
Appearance gray metallic, bluish when oxidized
ଉଚ୍ଚାରଣ /nˈbiəm/
ny-oh-bee-əm;
/kəˈlʌmbiəm/
kə-lum-bee-əm
Niobium in the periodic table
Hydrogen (other non-metal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (other non-metal)
Nitrogen (other non-metal)
Oxygen (other non-metal)
Fluorine (halogen)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (other non-metal)
Sulfur (other non-metal)
Chlorine (halogen)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (other non-metal)
Bromine (halogen)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (halogen)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanoid)
Cerium (lanthanoid)
Praseodymium (lanthanoid)
Neodymium (lanthanoid)
Promethium (lanthanoid)
Samarium (lanthanoid)
Europium (lanthanoid)
Gadolinium (lanthanoid)
Terbium (lanthanoid)
Dysprosium (lanthanoid)
Holmium (lanthanoid)
Erbium (lanthanoid)
Thulium (lanthanoid)
Ytterbium (lanthanoid)
Lutetium (lanthanoid)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (halogen)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinoid)
Thorium (actinoid)
Protactinium (actinoid)
Uranium (actinoid)
Neptunium (actinoid)
Plutonium (actinoid)
Americium (actinoid)
Curium (actinoid)
Berkelium (actinoid)
Californium (actinoid)
Einsteinium (actinoid)
Fermium (actinoid)
Mendelevium (actinoid)
Nobelium (actinoid)
Lawrencium (actinoid)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
V

Nb

Ta
zirconiumniobiummolybdenum
ପରମାଣୁ କ୍ରମାଙ୍କ (Z) 41
ଶ୍ରେଣୀ, ବ୍ଳକ group 5, d-block
ପର୍ଯ୍ୟାୟ period 5
ମୌଳିକ ପ୍ରକାର   transition metal
ମାନକ ପରମାଣବିକ ଓଜନ (Ar) 92.90638
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Kr] 4d4 5s1
per shell
2, 8, 18, 12, 1
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା solid
ଗଳନାଙ୍କ 2750 K ​(2477 °C, ​4491 °F)
ସ୍ଫୁଟନାଙ୍କ 5017 K ​(4744 °C, ​8571 °F)
Density near r.t. 8.57 g/cm3
Heat of fusion 30 kJ/mol
Heat of 689.9 kJ/mol
Molar heat capacity 24.60 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2942 3207 3524 3910 4393 5013
Atomic properties
Oxidation states 5, 4, 3, 2, -1
(mildly acidic oxide)
Electronegativity Pauling scale: 1.6
Atomic radius empirical: 146 pm
Covalent radius 164±6 pm
Miscellanea
Crystal structure body-centered cubic (bcc)
Cubic body-centered crystal structure for niobium
Speed of sound thin rod 3480 m/s (at 20 °C)
Thermal expansion 7.3 µm/(m·K)
Thermal conductivity 53.7 W/(m·K)
Electrical resistivity 152 n Ω·m (at 0 °C)
Magnetic ordering paramagnetic
Young's modulus 105 GPa
Shear modulus 38 GPa
Bulk modulus 170 GPa
Poisson ratio 0.40
Mohs hardness 6.0
Vickers hardness 1320 MPa
Brinell hardness 736 MPa
CAS Number 7440-03-1
ଇତିହାସ
ଆବିଷ୍କାର Charles Hatchett (1801)
First isolation Christian Wilhelm Blomstrand (1864)
Recognized as a distinct element by Heinrich Rose (1844)
Most stable isotopes of niobium
iso NA half-life DM DE (MeV) DP
91Nb syn 6.8×102 y ε - 91Zr
91mNb syn 60.86 d IT 0.104e 91Nb
92Nb syn 10.15 d ε - 92Zr
γ 0.934 -
92Nb syn 3.47×107y ε - 92Zr
γ 0.561, 0.934 -
93Nb 100% 93Nb is stable with 52 neutrons
93mNb syn 16.13 y IT 0.031e 93Nb
94Nb syn 2.03×104 y β 0.471 94Mo
γ 0.702, 0.871 -
95Nb syn 34.991 d β 0.159 95Mo
γ 0.765 -
95mNb syn 3.61 d IT 0.235 95Nb
| references

ନିଓବିଅମ (ଆଗରୁ columbium ଥିଲା) ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Nb (ଆଗରୁ Cb ଥିଲା) ଓ ପରମାଣୁ କ୍ରମାଙ୍କ ୪୧ ଅଟେ ।

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